One of the most useful of the e-Adventure Tile sets, this is an adventuring staple: large caverns. In addition to all four corners necessary to form a circular cavern, it includes an elevated shelf, a pool, and a smaller chamber. It features exits to smaller tunnels, but beware – you might find that your players wisely back out to the smaller tunnels and then fire away at the bigger monster that can't easily squeeze through. An exit to a larger tunnel (at least two squares wide) would have been helpful too.